EP2268257A2 - Compositions based on polymer/hydrogen peroxide complexes and uses thereof - Google Patents

Abstract

The invention relates to a cosmetic assembly for improving the appearance of the skin, comprising a first anhydrous composition comprising a polymer/H₂O₂ complex, said polymer having hydrogen bond acceptor groups capable of forming a non-covalent chemical bond with the hydrogen peroxide, and a second composition comprising an activator that promotes the decomposition of H₂O₂.

Description

 Compositions based on polymer-hydrogen peroxide complexes and their uses

The invention relates to a cosmetic assembly comprising a first anhydrous composition comprising a polymer-H ₂ O ₂ complex, and a second composition comprising an activator promoting the decomposition of H ₂ O ₂ .

It also relates to the use of this cosmetic set in the field of cosmetics or dermatology or to a cosmetic process comprising the application of this set to the skin.

Consumers are looking for skincare products with measurable short-term effectiveness with a noticeable and lasting improvement in the appearance of the skin. In particular, the desired effects are a smoothing of the cutaneous relief, less apparent pores, and / or a microrelief and less visible wrinkles, a reduction of the spots, a more radiant complexion, in particular for the dull skins or the dark skins, a sharper, less shiny skin, especially for oily skin. These results can be obtained with conventional care products over relatively long treatment times (greater than 3 months). Other treatments, such as chemical peels, also improve the appearance of the skin durably and noticeable after several application sessions. These treatments are generally accompanied by significant inconveniences, such as large desquamation a few days after an application session.

Oily skin is characterized by shiny skin, sometimes oily in appearance, thick, with enlarged pilosebaceous pores. Sebaceous hypersecretion is most often linked to hyperandrogenism due either to an androgen hyperproduction by an endocrine gland, or to peripheral hyperproduction of the sebaceous gland from surrounding androgens and / or proandrogens. Oily skin with a tendency to acne usually has cutaneous imperfections, dilated pores, an inhomogeneous texture of the skin and redness.

However, the known compositions do not make it possible to obtain rapidly a perceptible and lasting improvement in the appearance of the skin. In addition, it would be desirable to have skin care that is more stable and better tolerated than the known compositions of the prior art.

Formulations comprising polyvinylpyrrolidone-H ₂ O ₂ complexes have been proposed for the treatment of acne. Thus, US Pat. No. 5,122,370 (ISP) describes the use of polyvinylpyrrolidone-H ₂ O ₂ complexes dispersed in an anhydrous medium for the treatment of acne. However, the formulations proposed are not satisfactory for a cosmetic use as envisaged in the present invention.

There is therefore still a need to propose such cosmetic treatments for the perceptible and lasting improvement in the appearance of the skin, in particular with a view to obtaining a smoothing of the cutaneous relief, less apparent pores, and / or a microrelief and less noticeable wrinkles, fading of spots, a brighter complexion, especially for dull or dark skin and a clearer, less shiny skin, especially for oily skin.

The Applicant has been able to show, surprisingly and unexpectedly, that a cosmetic set as defined below makes it possible to fulfill the needs specified above.

The compositions of the cosmetic assembly developed by the Applicant are stable, and particularly effective for improving the appearance of the skin. In addition, the care proposed with the cosmetic set according to the present invention is better tolerated by the skin than the cosmetic care available. The subject of the invention is therefore a cosmetic assembly comprising:

a first anhydrous composition comprising at least one polymer-H ₂ O ₂ complex, said polymer having hydrogen bond acceptor groups capable of forming a non-covalent chemical bond with hydrogen peroxide; and

a second composition comprising at least one activator promoting the decomposition of H ₂ O ₂ .

The use of the cosmetic assembly according to the invention makes it possible to improve the appearance of the skin, in particular by attenuating the skin imperfections, the spots and the acne lesions, by smoothing the cutaneous relief, making the less visible pores (in particular by reducing the size of the pores), by reducing the number of pimples and blackheads, by making the microrelief and the wrinkles less visible, by restoring radiance to the skin, in particular dull skin, ash or dark, and / or improving the appearance of oily skin, especially by promoting the dullness of the skin or by decreasing the shine of the skin. The cosmetic assembly according to the invention also makes it possible to lighten the skin, to promote the radiance of the complexion, to homogenize the complexion, to diminish the spots, in particular the age spots or the spots due to the sun, or to improve the makeup hold.

The subject of the invention is therefore a cosmetic process for improving the appearance of the skin, and in particular for giving at least one of the effects on the skin mentioned above, comprising the application on the skin of the cosmetic assembly according to the invention, after mixing the compositions constituting said set.

The subject of the invention is also a cosmetic process for the care of oily skin, in particular with a view to mattifying the skin, comprising the topical application thereto of the cosmetic assembly as described above, after mixing the compositions. constituting said assembly. The compositions constituting the cosmetic assembly according to the invention will now be described in detail.

The first composition of the cosmetic assembly according to the invention is therefore an anhydrous composition which comprises at least one polymer-H ₂ θ ₂ complex.

The term "polymer complex-H ₂ O ₂ ", in the context of the present invention, denotes a complex between a polymer as defined below and hydrogen peroxide. The complex may in particular be formed before incorporation into the first composition according to the invention. In said complex, the polymer and hydrogen peroxide are non-covalently bonded, in particular by hydrogen bonds.

For the purposes of the present invention, the term "polymer" denotes any polymer having hydrogen bond acceptor groups capable of forming a non-covalent chemical bond with hydrogen peroxide. The hydrogen bond acceptor groups are, in the linear structure (or linear main chain) of said polymer, advantageously separated by a distance less than or equal to 5 carbon atoms, preferably less than or equal to 3 carbon atoms, so as to form stable hydrogen bonds with hydrogen peroxide. Preferably, hydrogen bond acceptor groups form non-covalent chemical bonds with hydrogen peroxide in a molecular ratio of 1: 1, 2: 1 or a mixture of these ratios. Hydrogen bonding acceptor groups are part of the general knowledge in the field of chemistry. In this respect, mention may be made of heteroatoms carrying free doublet (s) such as oxygen or nitrogen atoms.

The hydrogen bond acceptor groups are preferably NC = O or NC = N groups, which may be integrated in the linear structure of said polymer or carried by a carbon side chain of the polymer, for example a linear chain or a ring, preferably a cycle. Preferably, the polymer is capable of forming a continuous film on the skin, thus exhibiting a film-forming character.

Among the polymers that can be used in the first composition of the cosmetic assembly according to the invention, a polymer based on heterocyclic N-vinylic units is preferred.

The polymers based on heterocyclic N-vinyl units are homo- or copolymers derived from heterocyclic N-vinyl monomers, preferably comprising heterocyclic N-vinyl monomers having from 3 to 7 atoms in the heterocyclic ring, including a carbonyl (C = O) and a nitrogen atom and containing a vinyl group. Preferably, the ring contains 5 or 6 atoms and includes heteroatoms such as sulfur or oxygen, and may be substituted or unsubstituted. Preferably, the heterocyclic N-vinyl monomers are N-vinylcaprolactam, N-vinylpyrrolidone or N-vinylimidazole or mixtures thereof. Possible comonomers may be vinyl acetate, isopropenyl acetate, vinyl laurate, vinyl benzoate, methyl vinyl ether, 2-methyl vinyl imidazole, N-vinylpiperidone, N-vinyl-2-oxazolidone, methyl acrylate, acrylate of ethyl, styrene or a cationically modified vinyl monomer. Suitable copolymers contain, for example, from 30 to 99% by weight of N-vinyl monomers and from 1 to 70% by weight of a comonomer based on the total weight of the polymer. Advantageously, the polymer is poly-N-vinyl-poly-2-pyrrolidone or a copolymer thereof. Poly-N-vinyl-poly-2-pyrrolidone is also commonly known as polyvinylpyrrolidone or "PVP". The polymers include soluble or insoluble PVP polymers, crosslinked or otherwise. The PVP-containing copolymers can be derived from vinylpyrrolidone / vinyl acetate (also known as Copolyvidone, Copolyvidonum or VP-VAc) or vinylpyrrolidone / dimethylaminoethylmethacrylate.

The term "polyvinylpyrrolidone-H ₂ O ₂ complex" or "PVP-H ₂ O ₂ , in the context of the present invention, denotes a complex between a polyvinylpyrrolidone as defined above and hydrogen peroxide. The PVP-H2O2 complexes have the advantage of their film-forming properties and the fact that they exhibit the same activity as free hydrogen peroxide, at an equivalent rate of H2O2, whatever the formulation medium. They allow easy application, a good hold of the product on the face, especially avoiding it running in the eyes.

The polymer-H ₂ O ₂ complexes may be produced by procedures well known to those skilled in the art.

In particular, one of the methods described in US Pat. Nos. 5,077,047 (ISP), US Pat. No. 5,122,370 (ISP), or US Pat. No. 5,674,436 (BASF) may be chosen, and in the references cited in these patents. Alternatively, commercially available polymer-H ₂ θ ₂ complexes will be selected. These include the products marketed by ISP under the trade name Peroxydone®, in particular the products Peroxydone® K-30 and K-90, preferably Peroxydone® K-30. Peroxydone® K-30 and K-90 are linear homopolymers of N-vinylpyrrolidone of molecular weight 58,000 and 1,300,000, respectively, complexed with hydrogen peroxide present in an amount of 17 to 20% by weight. relative to the total weight of the complex.

The amount of hydrogen peroxide in the complex described above can be expressed as a percentage by weight of hydrogen peroxide with respect to the total weight of said complex.

The peroxide index (PI) is the amount of product (the polymer-H ₂ O ₂ complex containing the hydrogen peroxide) present in the sample, expressed in milliequivalents of active oxygen per kilogram, oxidizing the iodide of potassium under the operating conditions defined by ISO 3960 and AFNOR T 60-220.

The percentage by weight of H ₂ O ₂ in the complex corresponds to:

IP of the combination containing peroxide / 1000/10 x PM, knowing that: PM = molecular weight of H ₂ O ₂ and IP = peroxide index for a raw material (in particular the polymer complex-H ₂ O ₂ containing hydrogen peroxide) calculated under the operating conditions defined by the ISO 3960 and AFNOR T 60-220 standard.

For example, the amount of hydrogen peroxide in said complex may be in particular between 0.1 to 30% by weight, preferably 10 to 25% by weight relative to the weight of said complex.

Preferably, the amount of H ₂ O ₂ in the first composition is between 0.1 and 30%. Preferably, it is between 0.1 and 25% by weight, preferably between 0.1 and 20% by weight.

In a preferred embodiment, the first composition of the cosmetic assembly comprises 0.5 to 25% by weight of hydrogen peroxide relative to the total weight of said first composition.

Advantageously, the amount of complex described above is such that the content of H ₂ O ₂ in the cosmetic set (that is to say the composition resulting from the mixing of the first and second compositions of the cosmetic assembly defined above) is between 0.01 and 7%, preferably between 0.05 and 5%, preferably between 0.1 and 2% by weight relative to the total weight of the cosmetic assembly. Specific H ₂ O ₂ contents are 0.05; 0.1; 0.2; 0.3; 0.4; 0.5; 0.6; 0.7; 0.8; 0.9; 1; 2; 3 and 4% by weight relative to the total weight of the cosmetic assembly.

The amount of polymer-H ₂ O ₂ complex in the first composition may be in particular between 0.1 and 100% by weight relative to the total weight of the first composition.

According to one particular embodiment, the first composition consists of the polymer-H ₂ O ₂ complex, said polymer preferably being PVP. According to this mode, the first composition is in particular in powder form. According to another embodiment, the first composition comprises in particular between 0.5 and 85% by weight of the polymer-H ₂ O ₂ complex, in particular between 1 and 75%, between 2 and 55%, between 3 and 45%, preferably between 5% and 40% and even more preferably between 10% and 40% by weight relative to the total weight of the first composition. Advantageously, the complex is present in an amount of between 11 and 22% by weight relative to the total weight of the first composition.

According to a particular embodiment of the invention, the first composition of the cosmetic assembly comprises a polymer-H ₂ θ ₂ complex as defined above and a cosmetically or dermatologically acceptable anhydrous carrier. The assembly according to the invention being intended for topical use on the skin, the vehicle in the first composition must be acceptable from the cosmetic or dermatological standpoint, more particularly without odor, color or unpleasant appearance, and which does not generate tingling. tugging or redness unacceptable to the user.

By a cosmetically or dermatologically acceptable carrier, an environment compatible with keratin materials of human beings such as the skin, the mucous membranes, the nails, the scalp and / or the hair is understood.

The term "carrier" in the context of the present invention refers to an organic solvent or a mixture of organic solvents. The organic solvents may in particular be chosen from vehicles based on glycols (glycolated vehicles), alcohols (alcoholic vehicles), ketones, ethers, esters, aldehydes and their mixture, which are acceptable from the cosmetic or dermatological point of view.

By alcoholic vehicle is meant a vehicle comprising at least one water-soluble lower monoalcohol representing at least 50% by weight of the vehicle. By lower monoalcohol is meant an alcohol having from 1 to 8 carbon atoms and comprising only one hydroxyl function. As lower monoalcohols include, for example, ethanol, isopropanol, butanol, pentanol and mixtures thereof. Preferably, primary alcohols having 1 to 4 carbon atoms are selected. Ethanol is preferred.

By glycol carrier means a vehicle comprising at least one organic compound having at least two hydroxyl functions (referred to herein as glycol).

In particular, mention may be made of: glycerol; monomeric glycols, and in particular diols, such as in particular propylene glycol, dipropylene glycol, butylene glycol, diethylene glycol, ethylene glycol, hexylene glycol, isoprene glycol, pentylene glycol, butanediol,

1,2-propanediol, 1,3-propanediol, pentanediols, especially 1,5-pentanediol, decanediol, dodecanediol, and their ethers, such as propylene glycol monomethyl ether, dipropylene glycol monobutyl ether or 2-butoxyethanol; polymeric glycols, such as in particular polyethylenes glycols

(PEG) of high or low molecular weight and in particular polyethylene glycols with a molecular weight of less than 600, such as PEG-8 (or polyethylene

400), PEG-6, and PEG-12.

Among the preferred glycols, mention may be made of polymeric glycols, in particular polyethylene glycols with a molecular weight of less than 600, such as PEG-8 (or Polyethylene 400), PEG-6, and PEG-12.

Preferred PEGs are PEG-8 or PEG-6.

According to one particular embodiment, the glycolic carrier according to the invention comprises at least two glycols chosen from monomeric glycols and PEGs, or low molecular weight PEGs and high molecular weight PEGs.

According to another particular mode, the glycol carrier according to the invention comprises at least one diol and at least one glycol selected from glycerine or a PEG. AT As an example, the glycol vehicle may include the following glycols associations:

- (propylene glycol or butylene glycol) and glycerine;

- (propylene glycol or butylene glycol) and PEG8; - (propylene glycol or butylene glycol) and glycerine and PEG-8.

Advantageously, the glycol vehicle according to the invention comprises butylene glycol and optionally PEG-8. Preferably, the glycol carrier comprises PEG-8.

In a preferred embodiment, the first composition of the cosmetic assembly according to the invention comprises a PVP-H2O2 complex and a glycol vehicle comprising PEG-8.

According to a preferred embodiment, when the glycolic carrier contains a glycols / glycerin mixture, the glycerin content will be less than 50% by weight of glycerin relative to the total weight of the vehicle.

According to another preferred embodiment, when the vehicle is composed of a mixture of a glycol-based vehicle based on glycerine and an alcoholic vehicle (especially based on ethanol), the glycerin content will be less than 50% by weight of glycerin relative to the total weight of the vehicle.

According to another embodiment, the vehicle comprises a vehicle comprising at least one glycol as defined above (including the preferred modes), preferably a monomeric glycol and / or a polymeric glycol, and at least one alcohol as defined herein. above, preferably ethanol.

Among the other organic solvents which may be useful as vehicles in the composition, there may be mentioned: ketones which are liquid at room temperature (20-25 ^° C.), such as methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone or isophorone, cyclohexanone, acetone; propylene glycol ethers which are liquid at room temperature, such as propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate or dipropylene glycol mono-butyl ether; cyclic ethers such as gamma-butyrolactone; short-chain esters (having from 3 to 8 carbon atoms in total), such as ethyl acetate, methyl acetate, propyl acetate, isopropyl acetate, n-butyl, isopentyl acetate, methoxypropyl acetate, butyl lactate; ethers which are liquid at ambient temperature, such as diethyl ether, dimethyl ether or dichlorodiethyl ether; aldehydes that are liquid at room temperature, such as benzaldehyde or acetaldehyde; and their mixtures.

In a particularly preferred embodiment, the vehicle of the first composition comprises a small amount of oil. In other words, the amount of oil does not generally exceed 10% by weight relative to the total weight of the first composition. The amount of oil in the first composition is preferably less than or equal to 7%, by weight relative to the total weight of the first composition, more preferably less than 5%, preferably less than 4%. Preferably, the vehicle of the first composition does not include oil. As indicated above, the polymers used in the complex of the first composition preferably have film-forming properties. Consequently, the mixture of the film-forming polymer with an oil, if it is in a higher amount than indicated above, results in the formation of a composition having an appearance and a texture that is not very compatible with a cosmetic use. The term "oil" according to the invention means a fatty substance which is liquid at ambient temperature (approximately 25 ° C.) and in particular as defined below.

In a particularly advantageous embodiment, the first composition according to the present invention comprises, as polymer-H ₂ O ₂ complex, one of the PVP-H ₂ O ₂ complexes marketed by ISP under the name Peroxydone®, especially the Peroxydone® K-30 and K- 90, preferably Peroxydone K-30. Preferably, this PVP-H2O2 complex is dispersed in PEG-8.

The first composition of the cosmetic assembly according to the invention is anhydrous. In other words, the water content in the first composition is low. Thus, the amount of water does not generally exceed 10% by weight relative to the total weight of the first composition. It may in particular contain a small amount of water that usually comes from the raw materials used. The quantity of water in the first composition is preferably less than or equal to 7%, by weight relative to the total weight of the first composition, more preferably less than 5%, preferably less than 4%.

The low water content in the first composition according to the invention has the effect of a greater stability of the hydrogen peroxide in the composition.

In a preferred embodiment, the first composition of the assembly according to the invention does not comprise an enhancer promoting the decomposition of H2O2 (see below the description of the second composition for the definition of the term "activator promoting decomposition H2O2 "). The activator is thus separated from hydrogen peroxide, which makes it possible to improve the effectiveness of the cosmetic treatment according to the invention.

The second composition of the cosmetic assembly comprises at least one activator promoting the decomposition of H2O2. The term "H2O2 decomposing activator" covers any molecule or composition that can cause the decomposition of H2O2 into water and oxygen.

This term therefore covers a large number of compounds known to those skilled in the art. As activators, mention may in particular be made of basic compounds, especially sodium or potassium hydroxide, ammonia or triethanolamine, sodium bicarbonate (or ammonium), sodium carbonate, gluconate of manganese, sodium borate, peroxide calcium, calcium hydroxide, basic amino acids and their salts, such as lysine, arginine and their salts; guanidine; potassium carbonate, urea, aminomethylpropanol, aminopropanol, monoethanolamine (MEA), aminopropylthethoxysilane (APTES), derivatives of sodium or magnesium silicates, in particular laponite (in particular Laponite XLG sold by the company Rockwood), smectite, sodium metasilicate, hectorite, basic zeolites, in particular the zeolite marketed by Zeochem under the reference X-MOL, or their mixture. Advantageously, the activators are chosen from sodium bicarbonate, laponite, zeolites, calcium peroxide, sodium hydroxide (preferably 10% in water), sodium metasilicate and their mixture. The activators are preferably selected from sodium bicarbonate, zeolites and calcium peroxide. In a particularly preferred manner, the activator is a zeolite. Thus, in a particular embodiment, the second composition of the cosmetic assembly according to the invention comprises a zeolite.

Advantageously, the cosmetic assembly according to the invention comprises - a first anhydrous composition comprising a PVP-H2O2 complex, preferably in a glycolic vehicle comprising PEG-8, and - a second composition comprising a zeolite.

The activator may preferably be chosen from compounds or compositions capable of generating a pH greater than 8.5, preferably greater than 9, when they are mixed with a polymer-H ₂ O ₂ complex at 11% by weight in water (with a percentage of H ₂ O ₂ of 2% in the aqueous composition) relative to the total weight of the mixture (polymer-H ₂ O ₂ / water).

In the case of a PVP-H ₂ O ₂ complex, the following protocol can be used to select the activators. A dispersion of 11 g of Peroxydone K-30 ^® (ISP) is made in 75 g of water to which increasing amounts of activator are added. The pH is measured immediately after each addition. The excess activator is added until the activator / H ₂ O ₂ weight ratio reaches 10. In this example, the amount of H2O2 is about 2g because the peroxydone K-30 ^® contains 18.5% H2O2 by weight relative to the total weight of the Peroxydone K-30 ^® (i.e. to say of the complex).

The preferred activators are chosen from Rockwood laplonite XLG, zeolite X-MOL marketed by Zeochem, calcium peroxide, sodium hydroxide (10% in water) and sodium metasilicate and their mixture (see Table 1 below). below).

Table 1:

Those skilled in the art will pay particular attention to introducing a sufficient quantity of the activator so that the decomposition of H ₂ O ₂ , after mixing the compositions of the cosmetic assembly according to the invention, is effective in improving the appearance of the skin of the user.

It is preferable to choose one or more activators which make it possible to obtain, in the test described above, a pH of between 9 and 11, preferably between 9 and 10. The amount of activators in the second composition depends on the components of the first and second compositions of the assembly according to the invention, their respective amounts and their galenic forms. In particular, those skilled in the art will take care to choose the amount of activators so that when the compositions of the cosmetic assembly according to the invention are mixed, the resulting mixture can express a pH greater than 8.5, preferably greater than 9, and especially between 9 and 11, preferably between 9 and 10. For reasons of tolerance, however, a pH of between 9 and 9.5 is preferred. As an illustration, it will be possible to use amounts of activators defined on the basis of Table 1 above.

According to a particular mode, the pH of the mixture will be between pH 8.3 and 9 inclusive.

By "possibility of expressing a pH", in the context of the present invention, it is intended to define the pH of the mixture of the two compositions of the cosmetic assembly when this mixture comprises water.

The first composition according to the invention is anhydrous and the second composition may possibly be too. In this case, the mixture of the two anhydrous compositions does not allow the measurement of a pH. To know what is the pH expressed by the anhydrous mixture, water is added to this mixture, for example in an amount greater than 15%, preferably greater than 20% by weight relative to the total weight of water + mixture of the compositions, and the pH is measured. This measured pH is the pH expressed.

The second composition comprises at least one activator and optionally a cosmetically or dermatologically acceptable carrier.

According to one variant, the second composition consists solely of one or more activators. According to this variant, the second composition may be in powder form. According to a preferred embodiment of this variant, the activator is a zeolite in powder form. Even more preferentially, the first composition comprises a PVP-H2O2 complex and a glycolic vehicle comprising PEG-8, and the second composition consists of a zeolite in powder form.

According to another variant, the second composition comprises at least one activator and a cosmetically or dermatologically acceptable carrier. The assembly according to the invention being intended for topical use on the skin, the vehicle in the second composition must also be acceptable from the cosmetic or dermatological standpoint, more particularly without odor, color or unpleasant appearance, and which does not generate tingling, tightness or redness unacceptable to the user.

The same vehicles as those described above for the first composition of the cosmetic assembly can be used in the second composition. As a vehicle, the second composition may further comprise at least one oil. It may also include water.

As oils that can be used in the composition of the invention, mention may be made for example of:

linear or branched hydrocarbons of mineral or synthetic origin, such as paraffin oils, volatile or not, and their derivatives, petroleum jelly, polydecenes, hydrogenated polyisobutene such as Parleam® oil; branched alkanes, C ₈ -C ₆ isoalkanes C ₈ -C _6, such as isododecane (also known as 2,2,4,4, 6-pentamethylheptane), isodecane and isohexadecane;

triglycerides, such as liquid triglycerides of fatty acids containing from 4 to 10 carbon atoms, such as triglycerides of heptanoic or octanoic acids; or hydrocarbon oils of plant origin such as, for example, sweet almond, sunflower, corn, soybean, squash, coriander, grape seed, sesame, hazelnut, apricot oils. (Prunus Armenica OiI), macadamia, arara, castor oil, avocado, triglycerides of caprylic / capric acids such as those sold by Stearineries Dubois or those sold under the names Miglyol 810, 812 and 818 by Dynamit Nobel, jojoba oil, shea butter oil;

esters and synthetic ethers, in particular of fatty acids, such as the oils of formulas R ¹ COOR ² and R ¹ OR ² in which R ¹ represents the residue of a fatty acid comprising from 8 to 29 carbon atoms, and R ² represents a hydrocarbon chain, branched or unbranched, containing from 3 to 30 carbon atoms, for example Purcellin oil or 660084 PCL-LIQUID from the company SYMRISE (a mixture of cetylstearyl ethyl 2 hexanoate and isopropyl myristate), isononyl isononanoate, isopropyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate (or octyl palmitate), octyl-2 stearate dodecyl, octyl-2-dodecyl erucate, isostearyl isostearate; hydroxylated esters such as isostearyl lactate, octyl hydroxystearate, octyldodecyl hydroxystearate, diisostearyl malate, triisocetyl citrate, heptanoates, octanoates, decanoates of fatty alcohols; polyol esters, such as propylene glycol dioctanoate, neopentyl glycol diheptanoate and diethylene glycol diisononanoate; and pentaerythritol esters such as pentaerythrityl tetraisostearate;

fatty alcohols having from 8 to 26 carbon atoms, such as isoketyl alcohol, isostearyl alcohol and their mixture (cetearyl alcohol), octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, oleic alcohol or linoleic alcohol;

the partially hydrocarbon-based and / or silicone-based fluorinated oils, such as those described in document JP-A-2-295912, as fluorinated oils, mention may also be made of perfluoromethylcyclopentane and perfluoro-1,3-dimethylcyclohexane, sold under the names " FLUTEC PC1 ^® "and

"FLUTEC PC3 ^® " by BNFL Fluorochemicals; perfluoro-1,2-dimethylcyclobutane; perfluoroalkanes such as dodecafluoropentane and tetradecafluorohexane, sold under the names "PF 5050 ^®" and "PF 5060 ^®" by the company 3M, or bromoperfluorooctyl sold under the name "FORALKYL ^®" by the company Atochem; nonafluoromethoxybutane sold under the name "MSX 4518 ^®" by the 3M company and nonafluoroethoxyisobutane; perfluoromorpholine derivatives, such as 4-trifl uorométhyl perfluoromorpholine sold under the name "PF 5052 ^®" by the company 3M;

silicone oils such as volatile or non-volatile polymethylsiloxanes (PDMS) with a linear or cyclic silicone chain, which are liquid or pasty at room temperature, in particular cyclopolydimethylsiloxanes (cyclomethicones) such as cyclohexasiloxane and cyclopentasiloxane; polydimethylsiloxanes comprising alkyl, alkoxy or phenyl groups, during or at the end of the silicone chain, groups having from 2 to 24 carbon atoms; phenyl silicones such as phenyltrimethicones, phenyldimethicones, phenylthmethylsiloxydiphenylsiloxanes, diphenyl-dimethicones, diphenylmethyl-diphenyltrisiloxanes, 2-phenylethyltrimethylsiloxysilicates, and polymethylphenylsiloxanes;

- their mixtures.

Preferably, volatile oils, and in particular non-oxidizable volatile oils, such as short-chain hydrocarbons, ethers or polydimethylsiloxanes (C2-C20) are used. Dicaprylyl ether and cyclopentasiloxane may be mentioned in particular.

In a particular embodiment, the second composition of the assembly according to the invention is an anhydrous composition. In other words, the water content in the second composition is low. Thus, the amount of water does not generally exceed 10% by weight relative to the total weight of the second composition. It may in particular contain a small amount of water that usually comes from the raw materials used. The amount of water in the second composition is preferably less than or equal to 7% by weight relative to the total weight of the second composition, more preferably less than 5%, preferably less than 4%. In another embodiment, the second composition according to the invention is a composition comprising water. The amount of water depends on the type of composition envisaged for the cosmetic treatment.

Preferably, this composition contains water in an amount such that the mixture of the first and second compositions of the cosmetic assembly according to the invention comprises less than 70%, preferably less than 50%, by weight of water per relative to the total weight of the mixture, preferably less than 40

% in weight. According to this mode and preferably, the second composition comprises more than 10% by weight of water relative to the total weight of the second composition.

In a particular embodiment, the second composition of the assembly according to the invention does not comprise H2O2.

In another particular embodiment of the invention, the second composition is a composition comprising a zeolite as an activator and an anhydrous or aqueous glycol vehicle comprising butylene glycol. Preferably in this embodiment, the glycol vehicle comprising butylene glycol is an aqueous vehicle.

In a particular embodiment, the compositions of the cosmetic assembly according to the invention may also comprise at least one gelling agent or thickener. Those skilled in the art will take care to incorporate into one or other of the compositions, or both, any gelling agent compatible with a cosmetic or dermatological use. Mention may in particular be made, as a gelling agent, of alkyl polyethylene glycol (or alternatively referred to as PEG alkyl), such as in particular PEG 120 methyl di (or tri) oleate (Noveon Glucamate DOE 120, for example), PEG 150 pentaerytrityl tetrastearate (Croda's Crothix, for example); cellulose derivatives, such as in particular hydroxypropyl methyl cellulose (Klucel HF Pharm from Aqualon Hercules, for example); or poloxamers, such as in particular a condensate of ethylene oxide, propylene oxide and ethylene oxide (for example: 128 EO / 54 OP / 128 EO) (MW: 14000) sold under the name SYNPERONIC PE / F108 by Uniquema (INCI name: Poloxamer 338); or acrylic homo- and copolymers and homo- and copolymers of acrylamido methylpropanesulphonic acid (AMPS: Ammonium polyacryloyldimethyl taurate (for example: Hostacerin AMPS de Clahant).

The amount of gelling agent in the compositions may vary to a large extent, it is preferably between 0.01 and 10% by weight, preferably between 0.5 and 5%, relative to the total weight of the composition concerned.

It is also possible to combine in the compositions according to the invention additives and / or cosmetic or dermatological active agents.

It may thus be advantageous to use foaming surfactants.

Foaming surfactants are detergents and are distinguished from emulsifying surfactants by the value of their HLB (Hydrophilic Lipophilic Balance), the HLB being the ratio between the hydrophilic part and the lipophilic part in the molecule. The term HLB is well known to those skilled in the art and is described, for example, in "The HLB System, A time-saving guide to Emulsifier Selection" (published by ICI Americas Inc, 1984).

For emulsifying surfactants, the HLB generally ranges from 3 to 8 for the preparation of water-in-oil (W / O) emulsions and from 8 to 18 for the preparation of oil-in-water (O / W) emulsions, while foaming surfactants generally have an HLB greater than 20.

Advantageously, the compositions according to the invention may comprise a surfactant having an HLB greater than 20.

The surfactant may be present in a composition of the combination according to the invention in an amount ranging from 0.1 to 50% by weight, preferably from 0.5 to 35% by weight, preferably ranging from 0.5 to 20% by weight. % by weight, in particular from 1 to 15% by weight, or even 5 to 10% by weight, relative to the total weight of the composition concerned. The nonionic surfactants may be chosen for example from alkyl polyglucosides (APG), maltose esters, polyglycerolated fatty alcohols, glucamine derivatives such as 2-ethylhexyloxycarbonyl-n-methylglucamine, and mixtures thereof.

As alkylpolyglucosides, use is preferably made of those containing an alkyl group containing from 6 to 30 carbon atoms and preferably from 8 to 16 carbon atoms, and containing a hydrophilic group (glucoside) preferably comprising 1, 2 to 3 glucoside units. . As alkylpolyglucosides include eg decyl glucoside (Alkyl-C9 / C11 -polyglucoside (1.4)) as the product sold under the name Mydol 10 ^® by Kao Chemicals, the product sold under the name Plantaren 2000 UP ^® by Cognis and the product sold under the name Oramix NS 10 ^® by Seppic; caprylyl / capryl glucoside such as the product sold under the name Oramix CG 110 ^® by the company Seppic; lauryl glucoside such as the products marketed under the names Plantaren 1200 N ^® and 1200 ^® PLANTACARE by Cognis; coco-glucoside as the product sold under the name PLANTACARE 818 / UP ^® by Cognis; and their mixtures.

The maltose derivatives are, for example, those described in document EP-A-566438, such as O-octanoyl-6'-D-maltose, or else O-dodecanoyl-6'-D-maltose described in document FR-2739556. Among the polyglycerolated fatty alcohols include polyglycerolated dodecanediol (3.5 mol of glycerol), a product sold under the name Chimexane ^® NF by Chimex.

The anionic surfactants may be chosen for example from soaps (alkaline salts of fatty acids), carboxylates, acylamino acids, amidoether carboxylates, alkyl polyaminocarboxylates, alkyl ether sulfates such as sodium laureth sulphates, alkyl sulphonates, isethionates, alkyl methyltaurates, alkyl sulfosuccinates, alkylsulfoacetates, alkylphosphates (mono or dialkyl phosphates), their salts, and mixtures thereof.

As carboxylates, mention may be made especially alkyl glycol carboxylic acids (or acid 2- (2-hydroxyalkyloxy acetic acid), and their salts such as for example sodium lauryl glycol carboxylate, sold under the names Beaulight SHAA ^® or Beaulight LCA-25N ^® by the company SANYO (CTFA name: Sodium Lauryl Glycol Carboxylate), or its corresponding acid form sold under the name BEAULIGHT SHAA (Acid Form) ^® by the company SANYO As acylamino acids, mention may be made, for example, of sodium cocoylglycinate sold by the Ajinomoto company under the name Amilite GCS 12, the sodium lauroyl glutamate marketed by Ajinomoto under the name Amisoft LS11 and the sodium lauroyl sarcosinate sold by the company Seppic under the name ORAMIX L 30. As alkylphosphates, mention may be made of for example lauryl phosphate sold by Kao under the name MAP 20.

The amphoteric and zwitterionic foaming surfactants may be chosen, for example, from betaine derivatives including amidopropylbetaines, amphoacetates and amphodiacetates, hydroxylsultaines and their mixtures.

As betaine derivatives include for example the coco betaine as the product sold under the name DEHYTON AB-30 ^® by Cognis; lauryl such as the product sold under the name Genagen KB ^® by Clariant; oxyethylenated (10 EO) as the product sold under the name Lauryl Ether (10 EO) Betaine ^® by Shin Nihon Rica; oxyethylenated (10 EO) as the product sold under the name Stearyl Ether (10 EO) Betaine ^® by Shin Nihon Rica; cocamidopropyl betaine marketed for example under the name VELVETEX BK 35 ^® by Cognis; the undecylenamidopropyl betaine sold, for example under the name Amphoram U ^® by Ceca; and their mixtures. As amphoacetates and amphodiacetates, there may be mentioned for example N-cocoyl-N-carboxymethoxyethyl-N-carboxymethyl-N-ethylenediamine disodium (CTFA name: disodium cocamphodiacetate) as the product sold under the name MIRANOL C2M CONC ^® NP by the Rhodia Chimie company; N-cocoyl-N-hydroxyethyl-N-carboxymethyl-ethylenediamine N-sodium (CTFA name: sodium cocamphoacetate) and mixtures thereof. According to one embodiment of the invention, a surfactant that is suitable for the invention may be chosen from alkylpolyglucosides, betaine derivatives, alkylglycol carboxylic acids and their salts, alkyl ether sulfates, alkylphosphates, amphodiacetates, amphoacetates, alkylglycinates, acyls glutamates, acyls sarcosinates and mixtures thereof. According to one embodiment, a surfactant that is suitable for the invention may be chosen from decyl glucoside, cocoyl glucoside, sodium lauryl ether sulfate, cocoyl betaine, lauroyl betaine, cocamidopropyl betaine, lauramido propylbetaine and lauryl glycol. carboxylate, cocoampho (di) acetate, lauroampho (di) acetate, potassium lauryl phosphate, a mixture thereof.

Preferred foaming surfactants include:

- sodium cocoyl isethionate, such as the mixture sodium cocoyl isethionate / sodium isethionoate marketed by BASF under the name Jordapon CI P ^®; - decyl glucoside, such as the Plantacare 2000 UP ^® marketed by Cognis;

- potassium laurate, such as LAURATE Potassium DUB LK ^® marketed by Stearinerie Dubois;

- Sodium lauroyl OAT amino acids, such as aqueous 30% solution of lauroyl oat amino acids of the form of protected sodium salt (1, 4% phenonip) sold under the name Proteol OAT ^® by Seppic; potassium lauroyl wheat amino acids, such as potassium-lauroyl wheat protein hydrolyzed in water at 25% stabilized (0.4-0.4% potassium phenon-sorbate), marketed under the name AMINOFOAM W OR ^® by Croda; - polyglyceryl-3 hydroxylauryl ether or dodecanediol polyglycerolated (3.5 mol of glycerol), such as Chimexane ^® from Chimex;

- sodium lauryl ether sulfate, such as Texapon ^® AOS 225 UP Cognis;

- N-cocoyl-N-carboxymethoxyethyl-N-carboxymethyl-N-di sodium ethylene diamine (CTFA name: disodium cocamphodiacetate) as the product sold under the name Miranol C2M Concentrate ^® NP by the company Rhodia Chimie;

cocaine betaine or cocoyl betaine in aqueous solution, such as Rhodia's MIRATAINE BB / FLA; - PEG-7 glyceryl cocoate or glyceryl cocoate oxyethylenated (7 EO), such as Cetiol ^® HE from Cognis;

- lauryl betaine as lauryldimethylamine betaine in 30% aqueous solution, sold under the name Empigen BB / LS ^® by Huntsman; - sodium cocoamphoacetate, such as N-cocyl amidoethyl, N-hydroxyethyl sodium glycinate in 32% aqueous solution sold under the name MIRANOL ULTRA C 32 ^® by Rhodia;

- lauryl sulfate triethanolamine or TEA lauryl sulphate, such as triethanolamine lauryl sulphate (70/30 C12 / C14) in 40% aqueous solution sold under the name TEXAPON ^® T 42 by Cognis;

- sodium lauryl glycol carboxylate, sold under the names Beaulight SHAA ^® or Beaulight LCA-25N ^® by the company Sanyo (CTFA name: Sodium Lauryl Glycol Carboxylate) or its corresponding acid form sold under the name Beaulight SHAA (Acid Form) ^® by SANYO;

- lauryl phosphate sold by Kao under the name MAP 20 ^®; - sodium cocoyl glycinate, such as Amilite GCS ^® 12 from Ajinomoto.

Exfoliating particles, fillers or mixtures thereof can also be used in the compositions of the assembly according to the invention.

As exfoliating particles, exfoliating or exfoliating particles of mineral, vegetable or organic origin may be used. Thus, it is possible to use, for example, the balls or the polyethylene powder, such as those sold under the name Microthene MN 727 or Microthene MN 710-20 by the company Equistar or the powder marketed under the name Gotalene 120 Incolore 2 by the Dupont company. ; nylon particles such as those sold by Arkema under the name Orgasol 2002 EXD NAT COS; fibers such as polyamide fibers, such as those sold by the company Utexbel under the name Polymamide PULP 12185 SIZE 0.3 MM; polyvinyl chloride powder; pumice stone (INCI name: pumice) such as Eyraud's pumice 3 / B; hulls of crushed fruit stones such as crushed apricot kernels or nut hulls; sawdust; glass beads; alumina (aluminum oxide) (INCI name: Alumina) as the product marketed under the name Dermagrain 900 by Marketech International; sugar crystals; beads which melt during application to the skin, such as, for example, spheres based on mannitol and cellulose sold under the names Unisphères by Induchem, agar capsules sold under the names Primasponge by the Cognis company, and spheres based on jojoba esters marketed under the names Florasphères by Floratech; and their mixtures.

The compositions of the assembly according to the invention may also contain other fillers such as, for example, talc, modified starch or not, and in particular starches esterified with octenylsuccinic anhydride and more particularly "Aluminum Starch". octenyl succinate "such as the product marketed by National Starch under the name Dry-Flo. According to an advantageous embodiment, the compositions of the assembly according to the invention contain at least one filler.

These fillers can be any material that can mask the visible or tactile irregularities of the skin. These fillers can in particular modify the surface appearance of the skin by a tightening effect, a camouflage effect, or a blurring effect. As filler, the following compounds may be exemplified:

- porous silica microparticles such as Silica Beads ^® SB 150 and SB 700 medium size Myochi 5 .mu.m and SUNSPHERES H ^® series from Asahi Glass, H33, H51 size of respectively 3.5 and 5 .mu.m.

- hollow hemispherical silicone resin particles such as NLK 500 ^®, NLK 506 ^® and 510 ^® Takemoto NLK OII and Fat, in particular described in EP-A-1579849,

- silicone resin powders such as silicone resin Tospearl ^® 145 from GE Silicone average size of 4.5 .mu.m.

- powders of acrylic copolymers, especially poly (meth) acrylate such as PMMA particles Jurimer MBI ^® Nihon Junyoki average size of 8 .mu.m, hollow PMMA spheres marketed under the name Covabead ^® LH 85 by Wackherr company and expanded vinylidene / acrylonitrile / methylene methacrylate microspheres sold under the name Expancel ^® .

- powders of waxes such as paraffin wax particles microloase ^® 114S Medium sized MicroPowders 7 .mu.m.

- the particular polyethylene powders comprising at least one ethylene / acrylic acid such as ^® Flobeads EA 209 E Medium sized Sumimoto 10 .mu.m.

crosslinked elastomeric organopolysiloxane powders coated with silicone resin, in particular silsesquioxane under the name KSP

100 ^® , KSP 101 ^® , KSP 102 ^® , KSP 103 ^® , KSP 104 ^® and KSP 105 ^® by Shin Etsu. talc / dioxide or titanium / alumina / silica composite powders, for example the Cverleaf AR 80 ^® from Catalyst & Chemical.

talc, mica, kaolin, lauryl glycine, starch powders crosslinked with octyanyl succinate anhydride, boron nitride, polytetrafluoroethylene powders, precipitated calcium carbonate, hydrocarbon carbonate, magnesium, barium sulfate, hydroxyapatite, calcium silicate, cerium dioxide and microcapsules of glass or ceramics.

- the hydrophilic fibers or natural or synthetic hydrophobic, inorganic or organic such as silk fibers, cotton, wool, flax fiber, cellulose fibers extracted especially from wood, vegetables or algae, polyamide (Nylon ^®), of modified cellulose, poly-p-phenyleneterephthalamide fibers, acrylic fibers, polyolefin fibers, glass, silica, aramid, carbon, polytetrafluoroethylene (Teflon ^®), insoluble collagen, polyester, polyvinyl chloride or vinylidene, polyvinyl alcohol, polyacrylonitrile, chitosan, polyurethane, polyethylene phthalate, fibers formed from a mixture of polymers, synthetic resorbable fibers, and mixtures thereof described in patent application EP 1 151 742.

- the spherical elastomeric crosslinked silicones such as Trefil E- 505C E-506 ^® or C ^® from Dow Corning.

- abrasive fillers, which via a mechanical effect a smoothing of the skin's microrelief, such as abrasive silica such as abrasive SP ^® of Semanez or powders nuts or shells (apricot or walnut e.g. Cosmetochem).

The charge can be a "soft focus" charge. By "soft-focus" load, we mean a load which in addition gives transparency to the complexion and a fuzzy effect. Preferably, the "soft-focus" charges have an average particle size of less than or equal to 15 microns. These particles can be of any shape and in particular be spherical or nonspherical. More preferably, these fillers are nonspherical. The "soft-focus" fillers may be chosen from silica and silicate powders, in particular alumina powders, polymethyl methacrylate (PMMA) type powders, talc, silica / TiO 2 or silica / zinc oxide composites, and powders. polyethylene, starch powders, polyamide powders, styrene / acrylic copolymer powders, silicone elastomers, and mixtures thereof.

In particular, include talc medium of less than or equal to 3 microns, for example medium talc number of 1, 8 microns and especially the product sold under the trade name Talc P3 ^® by Nippon Talc , Nylon ^® 12 powder, in particular that sold under the name Orgasol 2002 Extra D Nat Cos ^® by the company Atochem, silica particles treated on the surface with a mineral wax 1 to 2% (INCI name: hydrated silica (and) paraffin) such as those marketed by Degussa, amorphous silica microspheres, such as those sold under the name Sunsphere, for example H-53 ^® reference by Asahi Glass company, and silica microbeads such as those sold under the name SB- ^700® or SB- ^150® by Miyoshi, this list is not limiting.

These exfoliating particles and fillers may be present in an amount ranging, for example, from 0.5 to 20% by weight, preferably from 1 to 15% by weight, better still from 1 to 10% and even more preferably from 2 to 5% by weight. relative to the total weight of the composition.

The compositions of the assembly according to the invention may also comprise all the constituents usually employed in the intended application. In particular, it is advantageous to use in the compositions at least one ingredient and / or an additional active skin care product, in particular oily skin.

It will be possible to combine the additional active ingredients and ingredients described in patent application EP 1 847 247, incorporated herein by reference, among which include depigmenting agents, preservatives, antimicrobial agents, antiperspirants, sebum regulators, metal chelators, UV filters, hydrolysed proteins, antioxidants, vitamins, anti-inflammatory agents, soothing or anti-inflammatory agents irritants, moisturizing agents, plant extracts, cosmetic adjuvants, and mixtures thereof.

Of course, those skilled in the art will take care to choose this or these optional additional compounds, and / or their quantity, in such a way that the advantageous overall properties according to the invention are not, or not substantially, impaired by the addition envisaged.

In an advantageous aspect of the invention, the compositions used may further comprise at least one desquamating agent and / or at least one soothing agent.

By "desquamating agent" is meant any compound capable of acting:

or directly on desquamation by promoting exfoliation, such as β-hydroxyacids, in particular salicylic acid and its derivatives (including n-octanoyl-5-salicylic acid); α-hydroxy acids, such as glycolic, citric, lactic, tartaric, malic or mandelic acids; urea; gentisic acid; oligofucoses; cinnamic acid; Saphora japonica extract; resveratrol; for the acids, their organic or inorganic salts are preferably used; a salt of n-octanoyl-5-salicylic acid is preferably used;

or on the enzymes involved in the desquamation or degradation of corneodesmosomes, glycosidases, stratum corneum chymotryptic enzyme (SCCE) or even other proteases (trypsin, chymotrypsin-like). Mention may be made of the chelating agents of mineral salts: EDTA; N-acyl-N, N ', N' ethylene diaminethacetic acid; aminosulfonic compounds and in particular (N-2-hydroxyethylpiperazine-N-2-ethane) sulfonic acid (HEPES); 2-oxothiazolidine-4-carboxylic acid derivatives (procysteine); drifts glycine-type alpha amino acids (as described in EP-0 852 949, as well as sodium methyl glycine diacetate marketed by BASF under the trade name TRILON M); honey ; sugar derivatives such as O-octanoyl-6-D-maltose and N-acetyl glucosamine.

As soothing agents that can be used in the compositions of the assembly according to the invention, mention may be made of: pentacyclic triterpenes and plant extracts (eg Glycyrrhiza glabra) containing them, for example β-glycyrrhetinic acid and its salts and / or its derivatives (glycyrrhetinic acid monoglucuronide, stearyl glycyrrhetinate, 3-stearoyloxy glycyrrhetic acid), ursolic acid and its salts, oleanolic acid and its salts, betulinic acid and its salts, an extract of Paeonia suffruticosa and / or lactiflora, salts of salicylic acid and in particular zinc salicylate, phycosaccharides from Codif, an extract of Laminaria saccharina, canola oil, bisabolol and extracts of chamomile, allantoin SEPIC SEPIVITAL EPC (diesterphosphoric vitamin E and C), omega 3 unsaturated oils such as rosehip musk, black currant, ecchium, fish, plankton extract, capryloyl glycine, Sep picalm VG (sodium palmitoylproline and waterlily alba) of Seppic, an extract of Pygeum, an extract of Boswellia serrata, an extract of Centipeda cunnighami, an extract of Helianthus annuus, an extract of Linum usitatissimum, tocotrienols, extracts of Cola nitida , piperonal, clove extract, Epilobium Angustifolium extract, aloe vera, Bacopa moniera extract, phytosterols, cortisone, hydrocortisone, indomethacin and beta methasone.

These active agents will generally be present in the compositions of the assembly according to the invention in a content ranging from 0.01% to 20% by weight and preferably from 0.1% to 10% by weight relative to the total weight of the composition.

Those skilled in the art will take care to choose among these assets those which may have an activity in the conditions of use of the compositions according to the invention. It will also take care to ensure that the assets used in their do not disturb the advantageous properties of the compositions constituting the cosmetic assembly according to the invention, especially in terms of pH.

Preferably, the active ingredients will be incorporated in the second composition of the cosmetic assembly, containing the activator of the H2O2 decomposition, or in an additional composition of the cosmetic assembly.

The compositions of the assembly according to the invention may be in any galenical form normally used in the cosmetic or dermatological fields, and compatible with the characteristics of said compositions.

In particular, the first composition consists of polymer-H2O2 complex, preferably in the form of a powder, to be mixed with the second composition before application. In this context, the second composition comprises at least one activator and a cosmetically or dermatologically acceptable carrier.

According to another variant, the first composition comprises at least one polymer-H ₂ θ ₂ complex and a cosmetically or dermatologically acceptable vehicle, which is mixed with the second composition. The second composition in this variant may consist of one or more activators, advantageously in powder form.

According to yet another variant, the first composition comprises at least one polymer-H ₂ θ ₂ complex and a cosmetically or dermatologically acceptable anhydrous vehicle, which is mixed with the second composition comprising at least one activator and a vehicle that is acceptable on the plane. cosmetic or dermatological, said vehicle of the second composition being anhydrous or aqueous.

The compositions of the cosmetic assembly of the invention may be more or less fluid and have the appearance of a white or colored cream, an ointment, a milk, a lotion, a serum, a paste, or a mousse.

They can optionally be applied to the skin in the form of an aerosol. They can also be in solid form, and for example in the form of a stick. They can be used as a care product and / or as a makeup product.

According to the invention, the two compositions of the cosmetic assembly can be presented in various forms of cosmetic products, with various containers, compartments, closure elements, applicators, packaging, etc.

The invention further relates to a packaging assembly comprising: i. a first compartment containing a first composition containing a polymer-H ₂ θ ₂ complex, ii. a second compartment containing a second composition containing at least one activator promoting the decomposition of H ₂ O ₂ , said second compartment being sealed from the first, and iii. means for allowing the contacting, in particular extemporaneous, of the two compositions.

The first and second composition of the packaging assembly are as defined above.

Such a set advantageously allows the extemporaneous contact of its two compositions, separately packaged respectively in the first and second compartments forming said assembly.

This set may also be provided with means allowing the communication of the first and second compartments and therefore of their respective contents.

The assembly is also advantageously provided with a means conducive to the distribution of the mixture of the two compositions. More specifically, the first and second compositions for the implementation of the invention are packaged separately inside two compartments, formed either by two separate containers or inside a unitary device.

The container (s) may be in any suitable form. It may be in particular in the form of a bottle, a tube, a jar, a case, a box, a bag or a case.

The closure element of the container (s) may be in the form of a removable cap, a lid, a lid, a tearable strip, or a capsule, in particular of the type comprising a body attached to the container and an articulated cap on the body. It can also be in the form of an element ensuring the selective closure of the container, including a pump, a valve, or a valve.

The container may be associated with an applicator. The applicator may be in the form of a brush, as described for example in patent FR 2 722 380. The applicator may be in the form of a block of foam or elastomer, a felt, or 'a spatula. The applicator may be free (puff or sponge) or integral with a rod carried by the closure member, as described for example in US Patent 5,492,426. The applicator may be integral with the container, as described for example in the patent FR 2 761 959.

The compositions can be contained directly in the container, or indirectly. By way of example, the compositions may be placed on an impregnated support, in particular in the form of a wipe or a buffer, and placed (individually or several) in a box or in a bag. Such a support incorporating the product is described for example in the application WO 01/03538. The closure member may be coupled to the container by screwing. Alternatively, the coupling between the closure element and the container is other than by screwing, in particular via a bayonet mechanism, snap-fastening, clamping, welding, gluing, or magnetic attraction. By "snapping" is meant in particular any system involving the crossing of a bead or a bead of material by elastic deformation of a portion, in particular of the closure element, then by return to the position not elastically constrained of said portion after crossing the bead or cord.

The container may be at least partly made of thermoplastic material. Examples of thermoplastic materials include polypropylene or polyethylene.

Alternatively, the container is made of non-thermoplastic material, in particular glass or metal (or alloy).

The container may have rigid walls or deformable walls, in particular in the form of a tube or a tube flask.

The container may include means for causing or facilitating the dispensing of the composition. By way of example, the container may have deformable walls so as to cause the composition to exit in response to an overpressure inside the container, which excess pressure is caused by elastic (or non-elastic) crushing of the walls of the container. .

The container may consist of a housing with a bottom defining at least one housing containing the composition, and a cover, in particular articulated on the bottom, and adapted to cover at least part of said bottom. Such a housing is described for example in patent application WO 03/018423 or in patent FR 2 791 042. The container may be equipped with a wiper arranged in the vicinity of the opening of the container. Such a wiper makes it possible to wipe the applicator and possibly the rod which it can be secured. Such a wiper is described, for example, in patent FR 2 792 618.

According to a particular embodiment of the invention, the container is in the form of a bottle or a flexible bag.

By "unitary device" is meant a device by which the two compartments or containers are integral with each other. Such a device can be obtained by a method of molding in one piece of the two compartments, in particular a thermoplastic material. It can also result from any form of assembly, especially by gluing, welding, or other snap.

According to a first embodiment, the two containers are distinct independent of one another. Such containers may be in various forms. This may include tubes, bottles or cans.

One and / or the other of the containers may be surmounted by a manually operated pump surmounted by a push button for the actuation of the pump and the distribution of the composition via at least one dispensing orifice.

Alternatively, one and / or the other of the containers are pressurized, in particular by means of a propellant, in particular a propellant. In this case, the (or) container (s) is (are) equipped with a valve surmounted by a push button equipped with a nozzle or other means of diffusion for the distribution of the product.

The propellant may be in admixture with at least one of the compositions to be dispensed or separated, in particular via a piston capable of sliding inside the container, or via the flexible walls of a pocket inside which is arranged the composition.

The containers may be made of various materials: plastic, glass, or metal.

According to a preferred embodiment, the two compositions are contained within a unitary device.

According to one particular embodiment, the first and second compositions of the invention are packaged inside two compartments (51, 52) delimited by a unitary device (1) of the pump-bottle type as represented in FIG. US 6,672,483.

In particular, each of the compartments is equipped with a pump (41, 42), preferably manually actuated, connected to at least one actuating and dispensing means (3) for delivering, separately or in a mixture, said first and second compositions.

According to a preferred embodiment, the actuating and dispensing means (3) is common to both pumps.

According to an alternative, each of the compartments is pressurized, in particular by means of a propellant, and equipped with a valve connected to at least one actuating and dispensing means making it possible to deliver, separately or as a mixture, said compositions.

In particular, the actuating and dispensing means is common to both valves.

The packaging device shown in FIG. 1 of US Pat. No. 6,672,483 consists of two compartments 51, 52 arranged side by side and formed inside a molded piece 5 obtained from a thermoplastic material.

Each of the containers 51, 52 has a neck 53 defining an opening. AT the inside of the neck of each of the containers is mounted a pump 41, 42, which can be with or without air intake.

During assembly, the part 5 delimiting the two compartments 51, 52 is disposed inside a covering element 10.

A pump rod 21a, 22a, of each of the pumps 41, 42 is forced into a corresponding conduit provided in a single push button 3 configured to allow simultaneous actuation of the two pumps, in response at a pressure exerted axially on a surface 35 of the push button 3.

The pushbutton ducts connected to each of the pumps open onto two orifices 31a, 32a disposed in the vicinity of each other on an outer surface of the push button 3. In response to an actuation of the pumps 41, 42, the two compositions come out separately either on the finger of the user, or on a tampon or cotton applicator. The mixture of the two compositions is then made during application to the surface to be treated.

For example, devices as described in US 5,833,121, US 4,773,562 and US 6,672,483 may be used.

According to another particular embodiment, the two compartments are formed inside a single flexible bag, and separated by a weak breaking or welding zone which can be broken at the moment of use, in particular in response to a pressure exercised at a specific point in the bag, at one of the two compartments. Examples of flexible bags with two compartments usable in the present invention are described in particular in patent applications JP2000272674, WO99 / 51509, EP243730 or FR 2 876 356. The compartments may be made by means of at least one sheet, for example a sheet of a flexible thermoplastic material; and linked to each other by a common border of low welding type. According to a mode In particular, the common edge of the low welding type is over the entire width of the bag, or on a smaller width forming a sealed channel between the two bags.

Preferably, the bag is made with films impermeable to oxygen in the air, such as aluminum.

Water-impermeable films can also be used in the form of a polyethylene terephthalate / silicone / polyethylene trilayer (PET / SiOx / PE).

Alternatively, the two compartments are formed of two concentric compartments formed inside a tube, and are surmounted by a pump without air intake equipped with a push button to one or two dispensing orifices. Inside the tube is provided a piston which goes up towards the pump as the compositions are taken from the inside of the containers. Such modes of distribution are used in particular for the distribution of toothpastes.

The contents of the aforementioned patents or patent applications are incorporated by reference in this application.

Still other devices can be used for the implementation of the present invention, the essential being that they can allow the separate conditioning of the two compositions of the cosmetic assembly of the present invention and their distribution separately or in combination. mixed.

The compositions of the cosmetic assembly according to the invention, after having mixed them, can constitute a mask, a cream for cleaning, protection, treatment or care for the face, for the hands, for the feet, or for the body (for example, day creams, night creams, make-up removing creams, foundation creams, sunscreen creams); cleansing milk; a lotion, gel or mousse for the care of the skin, such as a cleaning lotion. The cosmetic assembly according to the invention has in particular a lightening effect and a positive effect on the radiance of the complexion, it makes it possible to fade the age spots and / or has a positive effect on the appearance of oily skin, in particular by promoting the dullness of the skin. The cosmetic assembly according to the invention also makes it possible to lighten the skin, to promote the radiance of the complexion, to homogenize the complexion, to diminish the spots, in particular the age spots, or to improve the makeup hold.

Accordingly, the invention relates to a cosmetic method for improving the appearance of the skin, comprising applying to the skin of the cosmetic assembly according to the invention.

More specifically, the invention relates to a method for reducing skin imperfections, spots and / or acne lesions, for smoothing the cutaneous relief, to make the pores less apparent (in particular by reducing the size of the pores) , making microrelief and / or less visible wrinkles, to restore radiance to the skin, especially dull, ashy or dark skin, to improve the appearance of oily skin, especially by promoting the dullness of the skin, to lighten the skin, to promote the radiance of the complexion, to homogenize the complexion, to diminish the spots, in particular the spots of old age or due to the sun, and / or to improve the makeup hold, including the application on the skin of the skin, together according to the invention.

Skin blemishes will also be reduced by reducing the number of pimples and blackheads and / or reducing the brightness of the skin.

The assembly according to the invention can be applied in any way that can be envisaged by those skilled in the art in a skin care process.

In particular, it may be envisaged to mix the compositions of said assembly before application to the skin. The properties of the polymer contained in the first composition, in particular PVP, allow an application easy assembly of the invention after mixing the compositions constituting it, the mixture does not flow, or little, on the skin after application. Alternatively, it is possible to envisage the prior application of one of the compositions on the skin and then the application of the other composition to the skin thus prepared.

For example, in a particular embodiment, the first composition of the assembly according to the invention, containing the polymer-H ₂ θ ₂ complex, preferably a PVP-H ₂ O ₂ complex, is first applied to the skin. . Then, the second composition containing the H ₂ O ₂ decomposition promoting activator is applied to the skin, at least in the area where the first composition has been applied.

In another embodiment, the second composition containing the activator defined above is first applied, then the first composition containing the polymer-H ₂ O ₂ complex is applied to the skin, at least in the area where the second composition containing the activator was applied.

According to a preferred embodiment, said method according to the invention further comprises a rinsing step after application to the skin or its integuments of the cosmetic assembly.

According to a particular embodiment, the cosmetic process according to the invention comprises

the mixture of the first and second compositions of the cosmetic assembly according to the invention with water, the first composition comprising a PVP-H ₂ O ₂ complex and a glycolic carrier comprising PEG-8, and the second composition being consisting of a zeolite in powder form, and

- the application of the resulting mixture on the skin.

The invention also relates to the cosmetic use of the cosmetic assembly as described above, to improve the appearance of the skin, and more specifically to reduce skin imperfections, blemishes and / or acne lesions, to smooth the cutaneous relief, to make the pores less apparent (in particular by reducing the size of the pores), by reducing the number of pimples and blackheads, microrelief and / or less visible wrinkles, to restore radiance to the skin, especially dull, ashy or dark skin to improve the appearance of oily skin, in particular by promoting the dullness of the skin or by decreasing the brightness of the skin, to lighten the skin, to promote the radiance of the complexion, to homogenize the complexion, to reduce stains, especially age spots or due to the sun, and / or improve the strength of makeup, including the application on the skin of the cosmetic assembly according to the invention as described above.

The cosmetic assembly according to the invention also has the advantage of being able to allow the lightening of the integuments, and in particular the hair or the hairs or down, on the forearms, on the face, in particular at the level of the mustache, etc. .

The subject of the invention is also a cosmetic process for the care of oily skin, in particular with a view to mattifying the skin, comprising the topical application thereto of the cosmetic assembly as described above.

According to a preferred embodiment, said cosmetic process for the care of oily skin further comprises a rinsing step after application to the skin of the compositions of the cosmetic assembly as described above.

In particular, the cosmetic assembly is applied to areas of the face or forehead having a gloss.

According to a particular mode, the skin may be wetted, prior to the application of the cosmetic assembly according to the invention.

The methods according to the invention are more particularly intended for persons having a skin of phototype III to VI. According to a preferred embodiment, after application to the skin, the mixture of the compositions of the cosmetic assembly is rinsed, after a pause period advantageously between 5 and 30 minutes, preferably after a pause time of less than 20 minutes, so even more preferred for a time of about 15 minutes.

The cosmetic unit can be used as a mask, preferably with a weekly, bi-weekly or monthly application frequency. It can also be used as a cure with, for example, a daily application or twice daily for one or two weeks.

The invention further relates to an assembly as described above, as a product for the treatment of acne.

The invention therefore also relates to the use of an assembly as described above, for the manufacture of a product for the treatment of acne.

According to another aspect, the assembly according to the invention is used as an antibacterial active agent, to reduce the amount of acne-causing germs present on the skin, or to limit their development, and in particular to reduce the amount of acne. P. Acnes, or to limit the development of any of these germs.

What is meant by the term "treatment", and all its variations, curative or preventive treatment. The assembly according to the invention can thus be used in a subject with acne. The assembly according to the invention can also be used to delay or slow progression or prevent further progression of acne. The assembly according to the invention may finally be administered to a person not having acne, but whose skin, including oily skin, is acne prone.

The quantity of the active ingredients present in the compositions of the assembly according to the invention will advantageously be included in the ranges described. previously, to achieve the desired effect. Of course, those skilled in the art are able to establish the effective amount of said active agents in the assembly according to the invention, and will ensure that the ingredients and / or additional active ingredients introduced into the first and second composition described above. above does not alter the advantageous effects of the assembly according to the invention on the decay of the germs of acne.

According to another aspect, the invention relates to a dermatological treatment method for acne, comprising the topical administration of the assembly according to the invention described above, after mixing the first and second compositions, as described hereinabove. above, to a person in need.

The composition may be applied in any way that can be envisaged by those skilled in the art, and in particular according to the modalities described above for the cosmetic processes according to the invention.

The examples which follow illustrate the invention without limiting its scope. The compounds are, as the case may be, listed in chemical names or CTFA names (International Cosmetic Ingredient Dictionary and Handbook).

Legends of the figures

FIG. 1 is a graph showing the activation of a polymer-H ₂ O ₂ complex. This figure shows the ratio between the dissolved oxygen level at a time t, relative to the oxygen level at t ₀ , as a function of time.

Examples

Example 1: Lightening activity measured in vitro The lightening activity of a commercial PVP-H2O2 complex, ISP Peroxydone K-30 ^® , is measured in various solvents in a dye bleaching test.

In Vitro Fade Test Protocol

The dye solution or "solution X" is LCF (Sensant) brilliant blue FC disodium salt solution (Cl: 42090). The dye solution is prepared as follows: 15 mg of dye powder are solubilized in 50 ml of borate buffer pH 10.7 and then diluted again to 1/50 ^th . The borate buffer is prepared in the following manner: 4.77 g of disodium tetraborate, decahydrate (Na ₂ B ₄ O ₇ , 10 H ₂ O, M = 381, 37 g / mol) are dissolved with approximately 500 ml of water. The pH is adjusted to 10.7 with addition of a sodium hydroxide solution (approximately 250 ml of 0.1 N NaOH supplemented to 1 liter).

1 g of a 22% dispersion of Peroxydone K-30 ^® in the dilution medium under consideration (Ethanol, PEG-8, butylene glycol or glycerin) is added to 19 g of solution X. After 10 minutes of stirring the mixture in the dark, the dispersion is filtered (0.45 μm Cellulose filter) and the optical density is measured in the range [400-800] nm at 25 ° C. The dye absorbs at 630nm. The bleaching efficiency is expressed as the percentage of bleaching at t = 10min (ie [DOtiomm (mixture) - DOtiomm (dye) / OD _t o (dye)] X 100.

The results are given in the following table:

It is found that PVP-H2O2 has the same activity as free hydrogen peroxide, at an equivalent rate of H2O2, regardless of the formulation medium and is particularly effective in ethanol and PEG-8. The results obtained in butylene glycol are also satisfactory. These solvents will be preferred to glycerine.

Example 2: Formulation Examples

The preparations P1 and P2 indicated in the table below are mixed before application to the skin.

20g of formula in thick layer is applied on the face avoiding the contour of the eyes. The skin may be optionally moistened before application of the mixture. The product is left for 10 minutes then rinsed.

Note: Peroxidone K-3CP is a PVP-H ₂ O ₂ complex marketed by ISP; the calcium peroxide used is marketed by SPCH.

The mixtures are easy to apply (does not flow) because of the film-forming nature of PVP-H2O2. Example 3: Clinical Efficacy Test on Oily Skin

The two products A and B indicated in the table below were tested on 40 people with acne-prone fatty skin (presence of pimples / blackheads) with dilated pores according to a monocentric protocol, randomized double-blind in hemi-face .

After mixing in a cup preparations P1 and P2 (for each of the two products) in a ratio 1.5g / 1.5g, products A and B were applied (at a rate of 3g) in a thick layer on one side of the face moistened all days for 5 days (one product per cheek for the same person). The exposure time was 10 minutes. The product was then thoroughly rinsed.

^* Peroxidone K-30 is a PVP-H ₂ O ₂ complex marketed by ISP which contains 20%

H ₂ O ₂ and 80% PVP K30 L

** Polyvinylpyrrolidone marketed by ISP

*** X-MOL (Zeochem Company)

Preparation 1 is obtained by dispersion of the peroxidone K-30 ^® in PEG-8 with a pale blade until a transparent gel is obtained.

Preparation 2 is obtained by Rayneri dispersion of the zeolite powder after swelling the carbomer in a water / sodium hydroxide mixture and introducing the butylene glycol. The measured values are the scoring (size) of the pores (Dermascore) and the surface of the porphyrins (activity marker of the bacterium Propionobacterium Acnes).

It appeared after 5 days of daily application a significant superiority of the treatment for Product A compared to placebo (Product B) with regard to:

- the reduction of the pore size

- the decrease in the surface of porphyrins (equivalent to a decrease in the activity of P. acnes germs responsible for acne), proof of antibacterial efficacy.

Example 4: Demonstration of the Activation of the Polymer-H? O Complex

Product A is prepared as in Example 3 above and product C is identical to Product A with the exception of sodium hydroxide and zeolite in preparation P2.

^* Peroxidone K-30 is a PVP-H ₂ O ₂ complex marketed by ISP which contains 20%

H ₂ O ₂ and 80% PVP K30 L

** X-MOL (Zeochem Company)

Dissolved oxygen is assayed with oximeter 782 [Strath kelvin Instruments] connected to a microcathode oxygen electrode (Model 1302).

Preparation for Formula A: 10% P1 is diluted in water. Similarly for P2. 500 .mu.l of each diluted solution are introduced into an enclosure with temperature controlled, the Mitocell MT200 [Strath kelvin Instruments] in which the electrode is located. The dissolved oxygen is measured after 10 minutes of contact in μg of dissolved oxygen / ml. The same operation is performed for Product C.

The results obtained are represented in FIG. 1, in the form of a ratio between the oxygen concentration at the measurement time (t), and the dissolved oxygen concentration measured at the beginning of the experiment (t ₀ ), in function of time.

An excess of dissolved oxygen (at least 25% higher) is thus measured for Product A (corresponding to formula A in FIG. 1) with respect to Product C (corresponding to formula C in FIG. 1).

Oxygen dissolves dissolved for Product A and not for Product C.

The germs responsible for Acne (P. acnes) developing in the absence of oxygen (anaerobic bacteria), it is shown that the PVP-H2O2 complex provides a better activity than in its non-activated form.

EXAMPLE 5 Antibacterial Activity of the PVP-H2O2 Complex

The antibacterial activity of Product A according to Example 3 was determined against the bacterial strain Propionibacterium acnes This strain was brought into contact with Product A in a liquid culture medium in the following ratios:

- 10% of the bacterial inoculum at 10 ⁸ germs / ml,

- 10% of Product A,

- 80% of liquid culture medium.

In parallel, a growth control in which the Product A was replaced on the one hand by diluent (water) or on the other hand by the product B according to Example 3 was prepared under the same conditions. The samples were placed in a 35 ° C water bath and stirred for the duration of the test.

There are number / ml living P. acne bacteria after 2 hours of contact.

The tables above show that the PVP-H ₂ O ₂ complex product A (Peroxydone K-30 ^® at an equivalent rate of 2.3% H ₂ O ₂ ) does have an anti-bacterial activity against Propionobacterium Acnes. .

Claims

1. Cosmetic assembly comprising:

a first anhydrous composition comprising at least one polymer-H ₂ O ₂ complex, said polymer having hydrogen bond acceptor groups capable of forming a non-covalent chemical bond with hydrogen peroxide, and

a second composition comprising at least one activator promoting the decomposition of H ₂ O ₂ .

2. The assembly of claim 1, characterized in that the polymer of the polymer complex-H ₂ O ₂ is a polymer based on heterocyclic N-vinyl units, in particular a polyvinylpyrrolidone (PVP).

3. The assembly of claim 1 or 2, characterized in that the first composition consists of the polymer-H ₂ O ₂ complex, the first composition being in particular in powder form.

4. The assembly of claim 1 or 2, characterized in that the first composition further comprises a cosmetically or dermatologically acceptable anhydrous carrier.

5. An assembly according to any one of claims 1 to 4, characterized in that the second composition consists solely of one or more activators, the second composition being in particular in powder form.

6. An assembly according to any one of claims 1 to 4, characterized in that the second composition comprises at least one activator promoting the decomposition of H ₂ O ₂ and a cosmetically or dermatologically acceptable anhydrous carrier.

7. The assembly as claimed in one of the preceding claims, characterized in that the activator is chosen from compounds allowing the generation of a pH greater than 8.5 when they are mixed with a polymer-H ₂ θ ₂ to 11 complex. % by weight in water relative to the total weight of the polymer-H ₂ O ₂ / water mixture.

8. The assembly as claimed in any one of the preceding claims, characterized in that the activator promoting the decomposition of H ₂ O ₂ is chosen from the group consisting of sodium bicarbonate, laponite, zeolites, calcium peroxide, soda (preferably 10% in water), sodium metasilicate and their mixture.

9. An assembly according to any one of claims 4 to 8, characterized in that the vehicle of the first composition is selected from alcoholic vehicles, glycol vehicles or mixtures thereof.

10. Assembly according to any one of the preceding claims, characterized in that the amount of peroxide in the first composition is such that the content of H ₂ O ₂ is between 0.1 and 30%, preferably between 0.1. and 25%, preferably between 0.1 and 20% by weight relative to the total weight of the cosmetic assembly.

11. Cosmetic assembly according to one of the preceding claims, wherein the polymer-H ₂ O ₂ complex is a PVP-H ₂ O ₂ complex and the activator is a zeolite.

The cosmetic assembly of any one of claims 1, 2 and 4 to 11, wherein the first composition comprises a PVP-H2O2 complex and a glycol vehicle comprising PEG-8, and the second composition comprises a zeolite.

13. Packaging assembly comprising: i. a first compartment containing a first composition containing a polymer-H ₂ θ ₂ complex, ii. a second compartment containing a second composition containing at least one activator promoting the decomposition of H ₂ O ₂ , said second compartment being sealed from the first, and iii. means for enabling the two compositions to be brought into contact, in particular extemporaneously, the first and second compositions of the packaging assembly being as defined in one of the preceding claims.

14. Cosmetic process for improving the appearance of the skin, comprising applying to the skin of the cosmetic assembly according to one of claims 1 to 12.

15. The method of claim 14, characterized in that the improvement of the appearance of the skin comprises the attenuation of skin imperfections, patches and / or acne lesions, the smoothing of the cutaneous relief, the Obtaining less visible pores, microrelief and / or less visible wrinkles, improving the radiance of the skin, in particular dull, ashy or dark skin, or improving the appearance of the skin fat, in particular by promoting the mattness of the skin, the lightening of the skin, the improvement of the homogeneity of the complexion, the reduction of the spots, in particular the spots of old age or due to the sun, and / or the improvement of holding makeup.

16. Cosmetic process for the lightening of the integuments, comprising the topical application thereto, of the cosmetic assembly according to one of claims 1 to 12.

17. Method according to one of claims 14 to 16, further comprising a rinsing step after application to the skin or its integuments of the cosmetic assembly.